Ignition systems for internal combustion engine

Details Ignition systems for internal combustion engine Ignition systems for internal combustion engine

1977-10-25

1980-02-05

Myhre, Charles J.

Internal-combustion engines

Igniters

Incandescent

H05B 3702

Patent

active

041867130

ABSTRACT:
An internal combustion ignition system includes a switching transistor, an ignition transformer, a ballast resistor and a current sensing resistor. The primary winding of the transformer, and these two resistors are in series with the collector emitter path of the switching transistor across a supply. A sensing transistor has its base-emitter across the current sensing resistor and its collector connected to control a by-pass transistor with its collector-emitter across the ballast resistor. The transistor is on whenever the current in the sensing resistor is below a set level, thereby allowing a rapid current build up when the switching transistor is switched on.

REFERENCES:
patent: 3020904 (1962-02-01), Kerr
patent: 3240199 (1966-03-01), Neapolitakis
patent: 3565048 (1971-02-01), Monpetit
patent: 3575154 (1971-04-01), Taylor
patent: 3605713 (1971-09-01), Masters et al.
patent: 3645246 (1972-02-01), Campbell et al.
patent: 3821944 (1974-07-01), Miki et al.
patent: 3854466 (1974-12-01), Steinberg et al.
patent: 3941112 (1976-03-01), Habert
patent: 4030468 (1977-06-01), Sugiura et al.
patent: 4036199 (1977-07-01), Chateau

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